Commonality of rainfall variables influencing suspended solids concentrations in storm runoff from three different urban impervious surfaces
Article
Article Title | Commonality of rainfall variables influencing suspended solids concentrations in storm runoff from three different urban impervious surfaces |
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ERA Journal ID | 1949 |
Article Category | Article |
Authors | Brodie, Ian M. (Author) and Dunn, Peter K. (Author) |
Journal Title | Journal of Hydrology |
Journal Citation | 387 (3-4), pp. 202-211 |
Number of Pages | 10 |
Year | 2010 |
Publisher | Elsevier |
Place of Publication | Amsterdam, Netherlands |
ISSN | 0022-1694 |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.jhydrol.2010.04.008 |
Abstract | Finding a common set of rainfall variables to explain the concentration of suspended solids in runoff from typical urban impervious surfaces has many applications in stormwater planning. This paper describes a statistical process to identify key explanatory variables to Non-Coarse Particle (suspended solids<500 μm size) event mean concentrations measured from road, carpark and roof surfaces located in Toowoomba, Australia. The dominant variables for all surfaces were rainfall depth and peak 6-minute rainfall intensity. Storm duration, defined as the time period when rainfall intensity exceeds 0.25 mm/hr and antecedent storm rainfall were also important predictors, but was less dominant. The regression model fitted to non-coarse particle concentration across all surfaces was proportional to rainfall depth raised to a negative power and peak 6-minute rainfall intensity raised to a positive power; the proportionality constant varies by surface type. The form of this common model has a physical basis and is analogous to the Modified Universal Soil Loss equation widely used for soil loss estimation for non-urban areas. |
Keywords | stormwater; urban runoff; suspended solids; regression analysis; low impact development |
ANZSRC Field of Research 2020 | 401199. Environmental engineering not elsewhere classified |
410604. Soil chemistry and soil carbon sequestration (excl. carbon sequestration science) | |
400499. Chemical engineering not elsewhere classified | |
Public Notes | File reproduced in accordance with the copyright policy of the publisher/author. |
Byline Affiliations | Department of Agricultural, Civil and Environmental Engineering |
University of the Sunshine Coast |
https://research.usq.edu.au/item/q013z/commonality-of-rainfall-variables-influencing-suspended-solids-concentrations-in-storm-runoff-from-three-different-urban-impervious-surfaces
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